They also benefit the rich and powerful by enabling tax evasion and graft. Pyongyang, Tehran and Caracas make regular use of illicit trade and money laundering to facilitate upward wealth transfer.
Yours is a legitimate point. It's an argument for curtailing the power of law and government. That's fine. We can debate that. But until America decides it doesn't want to collect taxes anymore, the reporting is sort of required.
Many poor families, including immigrants, get through life daily with an underground, cash only, economy.
It's not just a tool of the rich and wealthy.
Taxation on assets and income is THEFT.
Depends on the ones you use. Certainly the privacy coins like Monero are the ones that do better than most of the other coins out there.